Lecture 8-Memory

Lecture 8-Memory - 3 STEPS OF "HAVING A MEMORY":...

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3 STEPS OF "HAVING A MEMORY": 1. ENCODING 2. STORAGE 3. RETRIEVAL SENSORY MEMORY 1. What is sensory memory? Stuff coming from the outside world. 2. Types of sensory registers (memory): Iconic Memory-where visual information is processed Echoic Memory-where auditory information is processed. 3. Questions: How does sensory memory work? How much information can be registered in sensory memory How much information can be processed in sensory memory before it dissipates? How fast does information dissipate? Sperling Studies of Sensory Memory 1. Flash matrix of letters/numbers for 1/20 sec. 2. Subjects reported what they saw 3. Counted piece of information remembered SENSORY MEMORY Questions/Answers: How does sensory memory work? Holds sensory information in its raw form so that it can be coded into some understandable means and transferred to short term memory. How much information can be registered in sensory memory? Infinite amounts How much information can be processed in sensory memory before it dissipates? Up to 9 pieces of information at a time How fast does information dissipate? Very fast, less than 3 seconds SHORT TERM MEMORY QUESTIONS: Does it exist? Primacy vs. Recency effects in memory Primacy-Long term memory Recency-Short time memory How big is it - how much information can it hold? How long does stuff stay in short term memory?
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Serial Position Curve : Primacy Effect- we typically remember the first few words list Recency Effect- we typically remember the last few words on the list SHORT TERM MEMORY How long does stuff stay in STM? -- about 20 seconds (without rehearsal) BROWN-PETERSON TASK How Do Short Term Memory and Long Term Memory differ Position of Word on a 20-word list 1 10 2 0 100 50 0 0 10 20 30 40 50 60 70 80 90 3 6 9 12 15 18 Time in seconds between presentation of consonants and recall request (no rehearsal allowed) Percentage who recalled consonants
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SHORT TERM MEM Small in size (7 +/- 2 chunks) Easy to enter:
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This note was uploaded on 10/19/2011 for the course PSYCH 100 taught by Professor Cave during the Spring '08 term at UMass (Amherst).

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Lecture 8-Memory - 3 STEPS OF "HAVING A MEMORY":...

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